Bunk bed



FIG. 1 is a perspective view of my new bunk bed;

FIG. 2 is a front plan view thereof;

FIG. 3 is a right side plan view thereof (the left side plan view is amirror image of this view);

FIG. 4 is a rear plan view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a bunk bed, as shown and described.